Not pump failure! It's running dry you have air locked in the block, mine did the same on the 1070 GPX-N Pro. The loop is clearly not bled fully, turn it off, add more coolant and get that air out.

EDIT: It's difficult I know as you have no visible way of seeing air in the loop but when I was custom with the Alphacool setup I had precisely the same noise and when tilting the case back a huge air pocket rolled out the GPU block and the noise stopped.

__________________

“A person who never made a mistake never tried anything new.” ~ Albert Einstein

Not pump failure! It's running dry you have air locked in the block, mine did the same on the 1070 GPX-N Pro. The loop is clearly not bled fully, turn it off, add more coolant and get that air out.

EDIT: It's difficult I know as you have no visible way of seeing air in the loop but when I was custom with the Alphacool setup I had precisely the same noise and when tilting the case back a huge air pocket rolled out the GPU block and the noise stopped.

This is a AIO, It came prebuilt with the coolant already in it. I have no idea how to fill it up also, there is no way of getting in to the radiator in order to top it up. It been running just fine for the last 3 months.

This is a AIO, It came prebuilt with the coolant already in it. I have no idea how to fill it up also, there is no way of getting in to the radiator in order to top it up. It been running just fine for the last 3 months.

It's an adaptable AIO, Alphacool do sell a filling kit for it but I'm struggling to find any media or data on this or how exactly you refill.

__________________

“A person who never made a mistake never tried anything new.” ~ Albert Einstein

Nothing that came in the box mentions refilling, yes I think if you want to add to a custom loop thats possible but no point having a 120mm rad in a custom loop so they didnt bother with a filling cap. Anyway, its still making the noise and I have had the pc in all sorts of positions and it still sounds like somebody trying to kill the neighbours cat..